Kaplan M W
Vision Res. 1984;24(10):1163-8. doi: 10.1016/0042-6989(84)90171-8.
Disk membrane synthesis and displacement rates in Xenopus laevis retinal rod outer segments, as measured by light-dark dependent birefringence band periods, are proportional to incubation temperature. Outer segment length, however, is approximately the same for frogs raised at different temperatures. Therefore the age of disks shed from outer segment distal tips is a function of temperature. Unless the rate of disk synthesis coincidentally has the same temperature dependence as putative disk membrane aging processes, this implies that position on the outer segment axis rather than disk age is a sufficient condition for disk membrane shedding in Xenopus laevis maintained under diurnal light-dark conditions.
通过明暗依赖性双折射带周期测量，非洲爪蟾视网膜视杆细胞外段的盘膜合成和位移速率与孵育温度成正比。然而，在不同温度下饲养的青蛙，其外段长度大致相同。因此，从外段远端尖端脱落的盘的年龄是温度的函数。除非盘合成速率与假定的盘膜老化过程恰好具有相同的温度依赖性，这意味着在昼夜明暗条件下饲养的非洲爪蟾中，外段轴上的位置而非盘的年龄是盘膜脱落的充分条件。
